T-Test Y_2002 Y_2004 Y_2005 Y_2006 Y_2007 N One-Sample Statistics 4 .94550 4 .86850 4 .68700 4 .76450 4 .91500 t Y_2002 16.934 Y_2004 28.010 Y_2005 4.785 Y_2006 8.674 Y_2007 8.434 Y_2002 Cohen's d Y_2004 Cohen's d Mean Std. Deviation Std. Error Mean Hedges' correction Y_2005 Cohen's d df Hedges' correction Y_2006 Cohen's d Hedges' correction Y_2007 Cohen's d Hedges' correction Hedges' correction 3 3 3 3 3 111668 .062013 287169 .176281 .216990 <.001 <.001 055834 .031007 143584 One-Sample Test Test Value = 0 Significance One-Sided p Two-Sided p .009 .002 .002 One-Sample Effect Sizes .088141 108495 111668 .154322 062013 085701 287169 .396861 17 81 .243616 .216990 .299875 <.001 <.001 .017 .003 .003 Standardizer Point Estimate 8.467 6.127 14.005 10.134 2.392 1.731 4.337 3.138 4.217 3.051 Mean Difference 945500 .868500 .687000 .764500 .915000 2.173 1.572 3.697 2.675 .323 234 95% Confidence Interval of the Difference 95% Confidence Interval Lower Upper .974 .705 .937 .678 Lower 15.008 10.860 24.760 17.916 4.432 3.207 7.774 5.625 7.565 5.474 .76781 .76982 .23005 48400 56972 Upper 1.12319 .96718 1.14395 1.04500 1.26028

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